246  
FGUS75 KMSO 212116  
ESFMSO  
IDC059-MTC023-077-093-242100-  
 
HYDROLOGIC OUTLOOK  
NATIONAL WEATHER SERVICE MISSOULA MT  
216 PM MST FRI FEB 21 2025  
 
...WARM AND WET WEATHER THIS WEEKEND INTO MONDAY WILL INCREASE  
SNOWMELT AND RUNOFF, LEADING TO POTENTIAL MINOR FLOODING IMPACTS...  
 
WHERE: POWELL, DEER LODGE, AND SILVER BOW COUNTIES IN MONTANA AND  
LEMHI COUNTY IN IDAHO.  
 
WHAT: A SIGNIFICANT WARM UP IS EXPECTED THIS WEEKEND INTO EARLY NEXT  
WEEK (FEBRUARY 24). HIGH TEMPERATURES WILL REACH INTO THE 40S, WITH  
OVERNIGHT TEMPERATURES NEAR OR ABOVE FREEZING. RAPID LOWLAND  
SNOWMELT WILL LEAD TO PONDING OF WATER IN LOW LYING AREAS,  
ESPECIALLY IN AREAS OF POOR DRAINAGE AND/OR IN  
BASEMENTS/CRAWLSPACES. ICE JAM RELEASES ARE ALSO A CONCERN ON SMALL  
STREAMS AND/OR CREEKS, AND MAY LEAD TO LOCALIZED FLOODING. RAIN  
SHOWERS WILL BRING PRECIPITATION TOTALS UP TO 0.20 INCHES ACROSS  
VALLEY AREAS SUNDAY INTO MONDAY, WITH UPWARDS OF 0.50 INCHES IN THE  
HIGHER TERRAIN.  
 
WHEN: BEGINNING SATURDAY AFTERNOON AND CONTINUING THROUGH MONDAY  
AFTERNOON. SNOWMELT WILL ESCALATE DURING THE DAY ON SUNDAY.  
 
MONITOR THE LATEST WEATHER AND RIVER FORECASTS FROM THE NATIONAL  
WEATHER SERVICE AT WEATHER.GOV/MISSOULA OR WATER.NOAA.GOV/WFO/MSO.  

 
 
JK  
 
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